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15.720017-V6.0
DMX model 226 en
7.2.7 Commissioning
CAUTION Carry out a functional check before commissioning!
Functional Check
● Dip the sensor into water
- Green LED and red LED are lighting:
Sensor and electronics are ready for operation!
- One or more LED do not light:
Sensor or electronics are defective!
• Call Grundfos service.
● Carefully dry the senor.
- Only the green LED still lights:
Sensor and electronics are ready for operation!
- the red LED still lights:
Sensor or electronics are defective!
• Call Grundfos service.
!
WARNING Do not open electronics or sensor!
Repair only by authorized qualified personnel.
7.2.8 Using the Contacts
❏ Terminals 6 and 7 (potential-loaded):
- e. g. for switching off the dosing pump in case of a diaphragm breakage
➜
Observe Technical Information of the dosing pump!
❏ Terminals 8, 9 and 10 (potential-free):
- e. g. for triggering an alarm device
7.2.9 Description of the Device
There are two light-emitting diodes (LED) at the electronics.
❏ Green LED:
- Shows the readiness for operation of the system.
- It only lights when the sensor is connected to the electronics. If it does
not light in this case, either the sensor or the cable is defective or wrongly
connected.
❏ Red LED:
- Lights in case of a diaphragm breakage being detected.
- The green LED continues lighting.
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